Generation of ultraviolet radiation with wide angular tolerance in cesium lithium borate crystal

Pramana ◽  
2000 ◽  
Vol 55 (3) ◽  
pp. 413-421 ◽  
Author(s):  
Gopal C Bhar ◽  
Pathik Kumbhakar ◽  
Anil K Chaudhary
2001 ◽  
Vol 188 (5-6) ◽  
pp. 371-375 ◽  
Author(s):  
U Chatterjee ◽  
P Kumbhakar ◽  
A.K Chaudhary ◽  
G.C Bhar

1993 ◽  
Vol 57 (6) ◽  
pp. 431-434 ◽  
Author(s):  
G. C. Bhar ◽  
P. K. Datta ◽  
A. M. Rudra

Author(s):  
William J. Baxter

In this form of electron microscopy, photoelectrons emitted from a metal by ultraviolet radiation are accelerated and imaged onto a fluorescent screen by conventional electron optics. image contrast is determined by spatial variations in the intensity of the photoemission. The dominant source of contrast is due to changes in the photoelectric work function, between surfaces of different crystalline orientation, or different chemical composition. Topographical variations produce a relatively weak contrast due to shadowing and edge effects.Since the photoelectrons originate from the surface layers (e.g. ∼5-10 nm for metals), photoelectron microscopy is surface sensitive. Thus to see the microstructure of a metal the thin layer (∼3 nm) of surface oxide must be removed, either by ion bombardment or by thermal decomposition in the vacuum of the microscope.


2006 ◽  
Vol 175 (4S) ◽  
pp. 260-260
Author(s):  
Nicholas J. Rukin ◽  
Samuel J. Moon ◽  
Dhaval Bodiwala ◽  
Christopher J. Luscombe ◽  
Mark F. Saxby ◽  
...  

1982 ◽  
Vol 43 (C9) ◽  
pp. C9-497-C9-500 ◽  
Author(s):  
M. Devaud ◽  
J.-Y. Prieur

Sign in / Sign up

Export Citation Format

Share Document